[4] The River Clarin rises in the townland of Gortnalone, north of Attymon and snakes westwards, turning southwards through Athenry.

Athenry Castle was built at a fording point on the river.

It flows southwestwards and passes under the N18 at Clarinbridge and enters Dunbulcaun Bay.

[5][6] Fish species include Crayfish, trout, salmon, lamprey and eel.

This article related to a river in Ireland is a stub.